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Here you get answers of your CBSE mathematics 1X and X questions by our experienced teachers. To ask a question click here |

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Question 48. PROVE THAT A CYCLIC PARALLELOGRAM IS A RECTANGLE. by SWETHA, E mail [email protected], answered on Feb 27, 2007 at 8:43 p.m. Answer 48. In cyclic quadrilateral ABCD, angle A + angle C = 180 (opposite angles of a cyclic quadrilateral) But angle A = angle C (opposite angles of a cyclic parallelogram) 2 angle A = 180 angle A = 90 quadrilateral ABCD is a rectangle |

Question 49. Is CBSE introducing a new math text this year (2007-2008) for 10th standard? If yes, then by when will it be available? by Mary R., E mail [email protected], answered on Feb 28, 2007 at 7:54 p.m. Question49. Is CBSE introducing a new math text this year (2007-2008) for 10th standard? If yes, then by when will it be available? by Mary R., E mail [email protected], answered on Feb 28, 2007 at 7:54 p.m.
Answer 49. Yes, the math text book is changing with a minor change in syllabus. The changed NCERT text book is generally available in late April or early May in all parts of India. |

Question 50. Solve graphically x - y = 10,3x - 4y = 0, by Rajpal Rathore, mail [email protected], answered on March 1, 2007 at 6:04 p.m.I.S.T. Answer 50. x - y = 10 x 20 30 40 y 10 20 30 3x - 4y = 0 x 30 60 90 y 40 80 120 Now plot on graph using scale 1 cm = 10 units along x and y axis. |

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Question 51. Prove that if the bisector of any angle of a triangle and the perpendicular bisector of its opposite side intersect,they will intersect on the circumcirle ofhte triangle.(NCERT-CIRCLES-EXERCISE-9.3\Q .33), by shashank kumar, Email [email protected],and many more students have asked this question during last few days. answered on March 3, 2007 at 12:49 a.m. Answer 51. Part 1 Let perpendicular bisector of side BC of triangle ABC intersect the circumcircle of triangle ABC at E and BC at D. Join AE, BD and CD. Because E lies on perpendicular bisector of BC, therefore EB = EC. So arc BE = arc EC. this gives angle BAE = angle CAE. Part 2 Let bisector of angle A intersect the circumcircle of triangle ABC at E. From E draw perpendicular to BC intersecting it at D. D lies on bisector of angle BAC, so arc BE = arc EC or BE = DE. Now in isosceles triangle EBC, ED is altitude to BC, therefore it is also median.So BD = CD. So ED is perpendicular bisector of BC This proves perpendicular bisector of a side and bisector of opposite angle of a triangle intersect on the circumcircle |

From here we begin answers for CBSE session 2007 - 08 Question 52. What are the changes in Mathematics class X syllabus this year (2007-08)? Can we buy old books? Ramanpreet class x, answered on March 26, 2007 at 8:01 p.m. Answer 52. No you have to buy new books. There have been a lot of changes, a few more chapters have been added and few others have been deleted. Even in the chapters which continue there have been changes. |

Question 53. Can you please tell me the chapters which have been deleted from 2007 - 08 CBSE mathematics syllabus class x. by Deepak Sharma, answered on March 27, 2007 at 5:20 p.m. I.S.T.
Answer 53. Commercial mathematics has been left out. The chapters are Instalments, Income tax etc |

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Question 54. Pls can u tell me where can I get model question and answer papers based on new syllabus for 2008 board exam children.Can we use the guides to study? by Sharmila Mahroof, answered on March 28, 2007 at 6:36 p.m. Answer 54. You can get CBSE mathematics class x new syllabus on cbsemath.com in April 2007. We will begin with sample papers of first chapter Real Numbers. You can get them here. |

Question 55. I need new CBSE syllabus 2008 for all subjects. Can you help? by Roopali Garg class x, anwered on March 30, 2007 at 9:35 p.m. Answer 55. You can download it from our website on April 1 or 2, 2007 for all subjects. |

Question 57. New Mathematics books class X are not available in enough numbers in our town, only a few students have got them. From where can I download online books? by Akshitta Jainclass X, answered on April 9, 2007 at 3:43 p.m. I.S.T.
Answer 57. You can download it from here |

Question 58. You promised to provide new maths sample papers class x in April but till today they are not available, When exactly will they be available? Gursimran singh class x, answered on April 11, 2007 at 6:00 p.m. I.S.T.
Answer 58. Dear student we will provide them within April. |